Rage3D Home Page

Discuss This Article

Go To First Page

Go To Previous Page

Page List

Go To Next Page

Go To Last Page

HIS Radeon HD 7750 iCooler Graphics Card Review

Product: HIS Radeon HD 7750 iCooler
Company: HIS
Author: James Prior
Editor: Charles Oliver
Date: March 12th, 2012

AA, AF, and Tessellation Tests

Anti-Aliasing Filtering

To test Anti-aliasing performance hit, we used DiRT 3 and various AA modes to see the impact on performance. Tests were performed at 1920x1080 with high preset, benchmark using Finland race. Results are below.

Small performance hit for 2x and 4xAA, and EQAA. 8xAA hit is sizeable at ~21%, and Adaptive AA is a 33% hit. Edge Detect and Super Sampled AA are 50% performance hits, with MLAA a 42% hit vs. no AA.

Anisotropic Filtering

To test Anisotropic filtering performance hit, we used Aliens Vs. Predator benchmark and varied AF with all other settings on high, no AA. Results are below.

16xAF is a 12% hit, 8xAF is 10% and 4xAF is 7%, a pretty linear drop.

Tessellation

To test tessellation performance, we used Crysis 2 and the Adrenaline benchmark tool Times Square level. With Performance setting and no AA/no Edge AA, we varied AMD Tessellation cap level to see if it affected performance, using application controlled tessellation as the baseline. Results below:

The 9th generation Tessellation unit in the GCN designs is not a bottleneck in Crysis 2.